David w



(No Model.)

D. W. COPELAND.

PLOW GOLTER. No. 270,750. Patented Jan.16,'1883.

N. PETERS. Phawhlhographnr. wuhin mn, n4;

UNITED STATES PATENT OFFICE.

DAVID W. COPELAND, OF LOWVILLE, NEW YORK.

PLOW-COLTER.

SPECIFICATION forming part of Letters Patent No. 270,750, dated January 16, 1883,

Application filed December 4, 1882. (No model.)

To all whom it may concern Be it known that I, DAVID W. COPELAND,

of Lowville, in the county of Lewis and State of New York, have invented a new and useful Improvement in Oolters for Flows; and Ido hereby declare that the following is a full, clear, and exact description of the same.

' My invention is animprovement in the colters of plows; and it consists of an improved clearer having its axis in line with the edge of the colter, and provided with ribs or blades arranged to receive the sod or clogging material as it slides up over the edge of the colter and to turn sidewise in order to free itself.

The accompanying drawings show in Figure 1 a side elevation of a colter with my improved clearer attached. on line 00 00 ofFig. 1.

In these drawings, A is the colter and B the clearer. The clearer consists of a central Fig. 2 is a section shaft, a, which is pivoted substantially in line' point, which comes down to the end of the recess near the edge of the colter. Between the bearings of the shaft a in the brackets I fix upon the said shaft ribs d d, which are set radially upon the shaft and are widest at the upper end, narrowing down to a point at the lower end. The hearing at the lower end is made so as to be nearly flush with the surface and prevent any lodgment of clogging material thereon.

The shafta, withits wings and point, may all be cast in one piece and made malleable, orit may be made of wrought'iron in. any convenient manner.

As ordinarily the material will not be evenly balanced upon the colter or clearer, the weight or friction upon one side will cause the clearer to turn to that side and clear itself from the clogging material. In case it should not readily turn, a slightlateralmovement of the plow will setit in motion.

The apparatus will operate effectively in any kind of soil and will free the colter fromany kind of clogging material.

I do not limit myself to the precise form 0 colter, nor the precise mode shown of attaching the clearer to the colter. bracket may be used. The number of wings may be increased or diminished, but the number which I have shown (four) is convenient andeffective but it is essential that the lower bearing shall be above the point and not in a socket in the colter, which would wear away. The point of the clearer must be kept near the ofi'set of the colter, and when this point wears away the clearer may be let down by means of the adjustable brackets.

I am aware that a rotary colter clearer has been shown in the patent of Bills of October 2, 1856, and I do not broadly claim such a clearer.

What I do claim is 1. In combination with a recessed plow-colter, a rotary clearer having radial wings and,

DAVID W. COPELAND.

Witnesses:

F. L. MIDDLETON, WALTER DoNALDsoN.

Other forms of 

